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N- L. SNOW ET AL March 8, 1932,

" BOILER CLEANER original Filed oct. 12'. 1925 5 Sheets-Sheet l 1 M NN A J7 8 nu mi Matchs 1932' N L. SNOW ET AL l;s4s,so7f BOILER CLEANER' l Original Filed Oct. 12. 1925 3 Sheets-Sheet Patented Mar.y 8, 1932 Umrecs-rerssy NonivI'ANl L. sNoW, or NEW OANAAN, CONNECTICUT, ANn- CURTIS` L. HOWsE, or

DETROIT, MICHIGAN, AssIeNoas 'ro DIAMOND POWER sPnCIirLTY CORPORATION, y or" DETROIT, MrCHIeAN, A CORPORATION orMIcIIrGA-N p f BOLER -CLEANIEB vApplication filed. October 12,.1`925,`Se12a1'1No. 62,102.'v Renewed July'27, 1931.

\ A `further feature of the invention resides in the provision of means for cooling the boiler cleaner.A Y l Referring to the f drawings in Which like reference characters indicate corresponding parts:

Figure 1 is a-y plan :view in cross section through a boiler Water leg showing'y one em'- bodi'ment' of our boiler cleaner; p .I Figure 2 is a sectional .view along 2;-.2 oi Figure 1 I Y l Figurej is a sectional view in elevation through a boiler water legillustrating a further embodiment of'our invention; y Figure 4L is a view along l-4 of Figure 3,8; Figure 5 is a View corresponding vto'liigure 1 illustrating a modilied construction; U

Figure 6 is an end elevation viewofthe blower .shown in Figure 5;

Figure 7 is a view corresponding, to Figure 5 illustrating a modiiied construction FigureS'is a fragmentary seotionalview of the discharge portion of a modified construction of boilerxcleaner.

Referringy to Figure 1V We have shown one form of al boiler cleaner wherein a cooling Huid suchas air is caused to travel through the barrel or nozzle chambers of the blo-Wer whichV for purposes of illustration is shown afs-'the non-ret'racting type.` 1`0is the exterior wall and 11i the interior wall of the Water leg' 12v of a boiler which, in the `present instance is of the locomotive type. `Into this Water:

-l'eg is expanded a nipple llrandv Within the nippleli'es the barrel 1110il the lolovverI or boil-- er" cleanerA 15. Barrel 14 is mounted in the housing 16 whichI is fixedt'o the exterior Water leg wall by any suitable means such as the' capscrews 17. The nozzlehead- 18-is provided with a plurality of nozzles 9 of varyingangularity for discharging jets of cleaning fluid in varying directions toward the parts of theboiler to be cleaned such as the'fiue sheet 19 and the tubes 20. The nozzles 9 are adapted to be successively placed in connection `With the steam or other cleaning fluid inlet 21'- by reason of the fixed port 22 ofy the'barrel' 14 and the passages 23. These passages extend longitudinally of the barreland respectively communicate With the nozzles 9; and; the inlet port 22. through the ports V2of the passages. The rotation ofthefnozzle head PATENT AF'ICiEf Within the barrel 14 is accomplished by4 op` l eration of a cable 25, theA lat'ter'passing overVV the sheave Wheel 26- llxedr with operatingrod v 27. This latter rod is fixed as at 28-vvitlfthe nozzle head 18l v i Y During periods ofY non-blowing or `nonoperation ofthe blo-Wer when coolingI ismore particularly desired-7 the draft in there box pulls a cooling fluid such as air through the air inlet, 29 to the chamber 3() and thence through aseries of ports 31, theseports estab?y lishing a communication with thecliamber() and the respective passages 2 3. However, WhenA the cleaning fluid 1s turnednony so Aasto enter one lor more` ofthe passagesy 23 com,-

municating Withthe inlet port'22the port 31 of such chambers will be automatically closed ,l

byreason of a ball valve 33,. the pressure of the cleaning fluid forcing this valve to the left to close the port 31. Assoon as any passage 23' is rotated into non-commun'icationy Withthe inlet722 or,l Whenever'the cleaning fluid is shut off, these ball valves vvill auto'- matically assume the positions shown in Fig'- ure 1` whereby the cooling air Willcirculate freely through the.ports3-1,.passages,23 and nozzles9. vMeans isl thus providedfor, eiliciently coolingthev boiler vcleaner` 'and auto# iaii'callypreventing the escape of cleaning u1 The air inlet 29 communicating with the chamber 30 may be fitted With a suitablel extension a, the inlet end ofvvhich may be,

covered by a screenlorl for filtering anydirt,l dust,for the like5from the incoming air. f

An additionalair passage 32 may beA provided which, as shownin Figure 1,'may extend Vaxially through the rod 27 and' Ithe nozzlel head 1'8.fr Such a passage al'ords addi-v tional cooling apart from the aforesaid lcooling systemincluding the air chamberSO;

In the event that it is not desired to admitJ 'air or other coolingfluid into vthef-tire box when the blower'is not operating7 the blower may be cooled by passingair through some of the nozzles and returning it to a point outside the fire box through other nozzles as shown in Figures 3 and 4. In these figures the air is shown circulating through the nozzle chambers 23 in the direction indicated by the arrows. The air enters the flared opening 33 which is turned in the direction of travel of the locomotive. An impelling force is thus imparted to the air which then passes through the elbow 34, duct 35, opening 36 and thence through the various ports 37 Vin communication with the opening 36. The air then travels longitudinally through the passages 23. Instead o f being pulled into the fire box, as in Figure 1, the air is deflected by a cap 38 and the direction of travel of the air is thus reversed causing the same to flow through the nozzles 9 and the respective passages 23 which have their ports 37 in communication with the cleaning fluid inlet 21. From the passage 21 the air is conducted through the opening 39 of the air relief valve 40 and thence through elbow 41 to the flared opening or funnel 42 in communication with the atmosphere. The funnel 42 at the outlet end may be turned in a direction opposite to that of the funnel 33 at the inlet end whereby a suction force is secured at the outlet end and a pressure at the inlet end. By reversing the directions of these funnels the direction of flow of the air through the blower may be reversed causing the air to pass in a direction opposite to that indicated by the arrows. In the non-blowing position of the parts, the outer peripheral edge of the cap 38 is in con tact with the inner wall' 11 of the water leg 12, thus preventing passage of the cooling air into the fire box. In order to permit removal of the cap from the path of the jets issuing from the nozzles 9 when the cleaning fluid is turned into the system, the cap is fixed to a plunger 43. Extending axially of the blower is a spring 44 mounted on the end of this plunger for normally holding the cap in the position shown in Figure 3. When so held the cap closes communication of the nozzles with the fire box thus compelling the air entering from one set of nozzles to pass out through another set. The relative circumferential lengths of the passages 36 and21 will determine the number of nozzles open on the air inlet and air outlet sides respectively.

When the steam is turned into the system, the valve disc 40 is pushed against its seat by the steam pressure against the action ofV the spring 45. This closes the air relief valve passage 39, while the steam is turned on and prevents the escape of steam through the valve. The steam also enters a chamber 46 through passage 47 and thence passes through ports 48 to the chamber 49 where it acts to push the plunger 43 outward against the action of spring 44. The cap 38 is thus pushed outwardly beyond the nozzles thus permitting the steam from the nozzles to blow in the di rection of thev locomotive flue sheets. Rotation of the nozzle head may be obtained by an operating shaft 50 and the bevel gears 51 and 52, the latter being fixed with the nozzle head or body 18. Y

The cap 38 and plunger 43 may be formed of a suitable heat-resisting metal, thus protecting the nozzle head from the scrubbing action of the gases and the radiant heat of the lire box.

Referring to Figures 5 and 6 we have shown a blower of the same general construction as described inthe figures referred to above, this blower being provided with a plate or cap 53 of a heat-resisting metal. This plate is open only for the area as shown at 54 in Figure 6, sufficient to permit the discharge of steam from the nozzles receiving steam from the supply 21 for projecting the jets toward the flue sheet 19. This plate 53 comprises the protecting and deflecting plate as shown in Figure 6, this plate being formed integrally with the longitudinally extending cylindrical portion 55 lying between the nozzle barrel and nipple 13. The end of the portion 55 may be bent over at 56 and held to the blower casing by means of a lug 57 secured to the casing by fasteners 58.

In this construction cooling air may enter the duct 36. flow through the passages 23, and be returned to the atmosphere through the axially'extending passageway 32.

The apparatusmay also be cooled by conduction to the water in the water leg 12 of the boiler. As illustrated in Figure 5, the casing 55 may be made a driving fit in the sleeve of nipple 13 which is expanded into the water leg. By reason of this close fit heat absorbed by the casing is in turn, readily transmitted to the water in the water leg of the boiler.

If desired, the nipple expanded in the water leg of the boiler as sho-wn in Figure 5 for example, may be dispensed with b v a construction such as shown in Figure 7. In this figure the casing 14 is threaded at the points 59 and 60 to engage suitable threads in the walls 11 and 10 respectively of the water leg 12. Thel opening in the wall 10 may be made larger' than that in the wall 11 so that the blower niay be Areadily inserted and threaded into both walls simultaneously. By reason of this construction the nozzle head or barrel portion 18 is separated from the water in the water leg 12 only by the casing 14 so that the heat will be effectively dissipated.

In the event that very high temperatures are encountered the blower casing proper may readily be built of a material having a low heat resistance such as steel, so as to constitute a good heat conductor for example, while the nozzle chamber may be constructed of a material having a relatively high heat resistance and therefore of poor heat conductivity since associated with the cap extending axially through said boiler cleaner and transversely through said boiler wall, said cap and plunger being formed of a heat resisting material.

12. A boiler cleaner extending transversely of a boiler wall and provided with a cleaning fluid supply pipe, a nozzleadapted to discharge the cleaning fluid from said supply pipe adjacent parts of the boiler to be cleaned, a cap positioned adjacent the discharge end of the boiler cleaner for protecting the discharge nozzle from the heat of the combustion chamber, and means for circulating cooling air from apoint without the boiler wall longitudinally of the boiler cleaner and transversely between the said cap and the adjacent end of the boiler cleaner.

13. The combination with a locomotive boiler water leg, of a boiler cleaner mounted in said water leg and provided with a nozzle adapted to discharge cleaning fluid toward parts of the boiler to be cleaned, said cleaner having a cleaning fluid conducting passage, and means for introducing air into said passage, said means including a member open to the atmosphere and facing in the direction of travel of the locomotive, thereby inducing a flow of air through said member and into said passage when the locomotive is in motion.

14. The combination with a boiler, provided with a combustion chamber, of a blower extending through the wall of said boiler from the exterior thereof and provided with a nozzle arranged to discharge cleaning fluid against a heat transfer surface in said chamber, a cap disposed within said chamber and normally positioned over said nozzle to protect the same from the heat of the chamber and movable from said position to permit unobstructed discharge from said nozzle, an inlet port and an outlet port for a cooling medium arranged at the outside of the boiler and conduit means connecting said ports, said conduit means being defined in part by said cap when in normal position.

15. The combination with a boiler provided with a combustion chamber, of a blower extending through the wall of said boiler from the exterior thereof and provided with a nozzle arranged to discharge cleaning fluid against a heat transfer surface in said chamn ber,a cap disposed within said chamber and normally.. positioned over and spaced from said nozzle to form a passage between the end of said nozzle and said cap and to protect the nozzle from the heat of the chamber, said nozzle being movable from said position to permit unobstructed discharge from said nozzle, an inlet port and an outlet port for a cooling medium arranged at the outside of the boiler and conduit means connecting said ports, said conduit means being defined in part by said cap when in normal position.

16. The combination with a boiler provided withl a combustion chamber, of a blower extending through the wall of said boiler from the exterior thereof and provided with a nozzle arranged to discharge cleaning fluid against a. heat transfer surface in said chamber, a cleaning fluid supply pipe for said blower, a cap disposed within said chamber and normally positioned over said nozzle to protect the same from the heat of the chamber, and movable from said position to permit unobstructed discharge from said nozzle, a port in said supply pipe, a valve controlling said port, and means affording a circulation of a cooling fluid during periods of non-blowing from a point on the exterior of the boiler wall through said boiler cleaner to a point adjacent the said cap and thence through said port, said valve being adapted to be seated by the cleaning fluid in the said sup- Pv plpe- 17. The combination with a boiler provided with a combustion chamber, of a blower extending through the wall of said boiler from the exterior thereof and provided with a nozzle arranged to discharge cleaning fluid against a heat transfer surface in said chamber, a cleaning fluid supply pipe for said blower, a cap disposed within said chamber and normally positioned over said nozzle to protect the same from the heat of the chamber, and movable from said position to permit unobstructed discharge from said nozzle, a port in said supply pipe, a valve controlling said port, means affording a circulation of a cooling fluid during periods of non-blowing from a point on the exterior of the boiler wall through said boiler cleaner to a point adjacent the said cap and thence through said port, said valve being adapted to be seated by the cleaning fluid in the said supply pipe, and means actuated by the cleaning fluid for moving said cap to clear the discharge nozzle during blowing periods.

18. The combination with a blower element having cleaning fluid discharge passages, of means for flowing a cooling fluid in a tortuous path through said passages.

19. The combination with a blower element having a plurality of longitudinally extending cleaning fluid discharge passages, of means for flowing a cooling fluid from one end of said element through one of said passages to the opposite end of the element and back through said element through another of the said passages.

20. The combination with a. blower element having cleaning fluid discharge passages and cleaning fluid discharge nozzles communicating with said passages, of means for flowing a cooling fluid in a tortuous path through said passages and through said nozzles.

21. The combination with a blower element having cleaning fluid discharge passages and cleaning fluid discharge nozzles communicating with said passages, of means normally '35 nipple and the boiler cleaner body portion,

ply pipe adjacentparts of the boiler to be cleaned, a cap positioned adjacent the discharge end of the boiler cleaner for protecting the discharge nozzle from the heat of the combustion chamber, said cap being provided with a portion extending longitudinally of the boiler cleaner and between the same and the said boiler wall.

34. The combination with a boiler wall having an opening extending transversely therethrough and a nipple secured within the said opening of a boiler cleaner having a body portion housed within the opening and provided with a dischargenozzle adapted to discharge a jet of cleaning fluid adjacent parts of the boiler to be cleaned, a cap extending transversely across the nozzle end of the boiler cleaner and provided with a sleeve extending substantially at right angles with the cap and lying between the nipple and the boiler cleaner body portion.

35. The combination with a boiler wall having an opening extending transversely therethrough and a nipple secured within the said opening, of a boiler cleaner having a body portion housed Within the opening and provided with a discharge nozzle adapted to discharge a jet of cleaning fluid adj acent parts of the boiler to be cleaned, a member provided with acap portion extending transversely across the nozzle end of the boiler cleaner and provided with a sleeve por-.

tion extending substantially at right angles with the cap portion and lying between the and means for circulating cooling air longitudinally through said body portion into contact therewith and said cap.

36. The combination with a boiler water leg having an opening extending transversely therethrough and a nipple secured within the said opening of a` boiler cleaner having a body portion housed within the opening and provided with a discharge nozzle adapted to discharge a jet of cleaning fluid adj acent parts of the boiler to be cleaned, said nozzle having a portion lying in face contact with a Wall of said water leg for cooling the noozle.

37. The combination with a boiler water leg` having an opening extending transversely therethrough and a nipple secured within the said opening of a boiler cleaner having a body portion housed within the opening and provided with a plurality of discharge nozzles adapted to discharge jets of cleaning fluid at varying angles relatively to each other toward parts of the boiler to be cleaned, said nozzles being positioned for thermal contact with the said water leg for cooling the nozzles.

38. The combination with a boiler water leg having an opening extending transversely therethrough and a nipple secured within F the said opening of a boiler cleaner having a body portion housed'within the opening and provided. with a plurality of discharge nozzlesadapted. to discharge jets of cleaning fluidv at varying angles relatively to each other toward parts of the boiler to be cleaned,

having an opening extending transversely.

therethrough and a nipple securedI withm the said opening of a boiler cleaner having a body portion housed within the opening and provided with a discharge nozzle adapted to discharge a jet of cleaning fluid adjacent parts of the boiler to be cleaned, said nozzle being positioned for thermal contact with the water leg of the boiler, and having a wall of increasing cross sectional thickness for facilitating heat conduction from the nozzle to thewater within the said water leg.

40. The combination with a boiler wall having an opening extending transversely therethrough and a nipple secured within the said opening of a boiler cleaner having a body portion housed within the opening and provided with a plurality of discharge nozzles, adapted to discharge jets of cleaning iuid at varying angles relatively to each other toward parts of the boiler to be cleaned, said nozzles being positioned in contact with the said water leg for cooling the nozzles, said nozzles having a portion of increasing cross sectional thickness toward the said body portion for aiding in heat conduction from the nozzles to the water within the said water leg.

41. The combination with a blower element having cleaning fluid discharge passages, cleaning fluid discharge nozzles communicating with said passages, and an auxiliary fluid conducting passage, of means for flowing a cooling fluid through said cleaning fluid discharge passages and to said auxiliary fluid conducting passage.

42. The combination with a blower element having a plurality of longitudinally extending cleaning fluid discharge passages and an auxiliary longitudinally vextending fluid conducting passage, of means for flowing a cooling fluid from one end of said e1ement through one of said cleaning fluid discharge passages to the opposite end of the element and back through said element by way of said auxiliary fluid conducting passa 'e. v

3.The combination with a blower element having cleaning fluid discharge passages, cleaning fluid nozzles communicating with said passages, and an auxiliary uid conducting passage extending longitudinally through said blower element, of a cap forming with theend of said element a fluid conducting passage connecting certain of said nozzles with said auxiliary fluid conductingl passage, and means for flowing a cooling fluid through said element by Way of one of said cleaning Huid discharge passages, and through the fluid conducting passage formed by the cap and back through saidrblower element by way of said auxiliary fluid conducting passage.

4A. The combination'with a rotatable blower element having a plurality of cleaning fluid discharge passages, an auxiliary fluid conducting passage, vand means for supplying cleaning fluid successively to said cleaning fluid discharge passages upon rotation of said blower element, of means for y effecting a circulation of cooling fluid through the remaining cleaning fluid discharge passages not supplied with cleaning 20 fluid and through said auxiliary fluid conducting passage during the operation of the blower element. Y i' In testimony whereof we affix our signatures.

NORMAN L. SNOW. CURTIS L. HOWSE. 

